Cutting stick



April 14,1925.

J. H. LINDSAY CUTTING sTrcx lzued sept. 17, 1921 H Y! Dwi i' .Zh/Ilenia?? 7QsephIZinda-qy,

Patented Apr.y 14, 19.25.Y

UNITED srs-'rss JGSEPH H. LINDSAY, OF 'WILMING'ION} DELAWARE;

CUTTENG STCK.

Application filed September 17, 1921. Serial No. 501,492.

To all yrollio/11.l it muy concern.'

lle it known that l, Josncir ll. Li'Nnse- L a citizen ofthe United States, residing at l'X/'ilniingtoi'n in the county of New Castle, State of Delaware, have invented a new and useful Cutting' Stick7 of which the followingis a specification.

The invention relates to cutting` sticks for standard sheetcuttinn' machines. .he object is to provide an improved cuttingh stick for use with straight cutting knives, and adapted to be turned and also reversed end to end so as to present to the cutting kuiteedge a plurality of adjacent cutting' surfaces that shall be equally eiicient in cooperating with the cutting edge of the knife to secure a clean cut of the sheets even to the sheet lying next to the surface of the cutting stick.

The invention includes the utilization of certain substances in the formation or composition of the stick, which substances when properly acted upon have certain required characteristics,4 comprise for example a. sufficient yielding to the knife-edge to maintain its cutting` efciency, and at the saine time a sufficient toughness and coherence t( resist a breaking down of its structure adjacent the line of cut, so that the surfaces of the stick, immediately adjacent the cutting lines shall present eifective areas for cooperating with the knife.

The common practice in the art to which this invention belongs is to use cuttingI sticks of hard wood. The best of these woods have a grain or liber in their structure which affected for a substantial distance from the line of cut, on either site; with the result that the surface of the stick alon.;` the line of cut, under the action of the knife and the pressure of the adjacent sheets, soon bccomcs a channel of considerable width with rough and broken margins. This means a very rapid deterioration of the stick` and also a murrine' of the lower sheets.y and a consequent waste of the material operated j upon` such as paper sheets, since their sev-- ered edge-s become torn and ragged. A `creat waste of time and material in the necessity of frequent changing' of the sticks is also a direct consequence of these conditions.

The substance which I have found most satisfactory from which to forni or construct my improved cutting stick, is an artilicial composition such as vulcanite liber, 0r similar substance, having no grain or cell structures which extend in substantially parallel lines in direction of the longitudinal extension ofthe stick, as in wood. This is particularly significant in conection with long narrow cutting sticks where the knife cut or cutting' line runs necessarily with the general dir ction of the grain, and where the action of Athe knife upon the stick is a repeated action on substantially the same line. This, as above stated, tends to inutiliate the body of the wooden stick for a considerable distance on either side of the cutting line. This *splitting or marring extends frequently even through the corner of the stick, so that not only adjacent surface port-ions on the same side or face, but even the. adjacent sides of theV stick are often rendered unavailable for further use. 1

lVhile, in accordance with my invention, the stick mayl be turnedv on its longitudinal axis from face to face, and a plurality of portions of the same face can Abe made avail able by a suitab-le shifting of the stick, as,

for example, by turning it end'for end.

ll am aware that such substance as vulcanite liber is old, and used in many arts, even as a matrix for cutting and pressing' dies, but as far as I am aware, the essential characteristics above described have never been utilized in connection with cutting' sticks for straight-cut sheet-severing' machines. My invention has resulted in a distinct advance in the art, by saving' great waste of the stock operated upon, great waste in the. material now used in forming the sticks, and also creat waste in the time of the operator due to the frequent changing? and renewing` of the sticks.

In the drawing, the ligure is a view in perspective of the stickjin accordance with my invention.

The four longitudinal sides are indicated line of lcui; of the knenc'l thus preserxf'e o1' its equivalentadapted to be reversed und lmmediately ad] aeent surfaces for eieetwe shlfted to present new hues of Vhuize-contact cooperation Wlth the knlfe when the Vstmk and to reslst the @rushing lotion of 'the knife 10 is shifted-With respect torsad line of eut. Y Ywhen engaging said surfaceon a .line e-lesely 5 What I e1aI1f1's:-.- adjacent a former Ime of out. l

A Cutting stick having a plurality of j knife-contacting surfaces of Xf'ulcante ber Y JOSEPH H. LINDSAY. 

